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CVE-2026-4027— FlexNet Manager Suite Attachment File Disclosure

Quick assessment

Affected
Flexera FlexNet Manager Suite
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Flexera FlexNet Manager Suite是美国Flexera公司的一款企业级 IT 资产管理（ITAM）与软件资产管理（SAM）解决方案。 FlexNet Manager Suite 2025 R1版本和2025 R2版本存在安全漏洞，该漏洞源于访问控制不足，可能导致未经授权访问附件文件。

AI Predicted 8.1 Difficulty: Moderate EPSS 0.35% · P26

Possible ATT&CK Techniques 1 AI

T1552.005 · Cloud Instance Metadata API

Affected Version Matrix 2

VendorProduct Version RangeStatus
Flexera FlexNet Manager Suite 2025 R1≤ 2025 R2 affected
2026 R1 unaffected
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I. Basic Information for CVE-2026-4027

Vulnerability Information
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Vulnerability Title
FlexNet Manager Suite Attachment File Disclosure
Source: CVE Program / CVE List V5
Vulnerability Description
A security vulnerability has been identified in FlexNet Manager Suite 2025 R1 and R2 that could allow unauthorized access to attachment files due to insufficient access control.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
访问控制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Flexera FlexNet Manager Suite 权限许可和访问控制问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Flexera FlexNet Manager Suite是美国Flexera公司的一款企业级 IT 资产管理（ITAM）与软件资产管理（SAM）解决方案。 FlexNet Manager Suite 2025 R1版本和2025 R2版本存在安全漏洞，该漏洞源于访问控制不足，可能导致未经授权访问附件文件。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Flexera FlexNet Manager Suite 2025 R1 ~ 2025 R2 -

II. Public POCs for CVE-2026-4027

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III. Intelligence Information for CVE-2026-4027

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Other References for CVE-2026-4027 (1)

IV. Related Vulnerabilities

Same product: FlexNet Manager Suite
Same vendor: Flexera
Same weakness: CWE-284

V. Comments for CVE-2026-4027

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